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Finding the Fourth Proportional to 89,354.67, 133,827.87 and 42,640.35

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Solution

The fourth proportional to 89,354.67, 133,827.87 and 42,640.35 is: 63,863.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,354.67 : 133,827.87 = 42,640.35 : x
  2. Step 2: Convert to fraction form
    89,354.67/133,827.87 = 42,640.35/x
  3. Step 3: Cross multiply
    89,354.67x = 133,827.87 × 42,640.35
  4. Step 4: Simplify right side
    89,354.67x = 5,706,467,216.55
  5. Step 5: Solve for x
    x = 5,706,467,216.55/89,354.67
  6. Step 6: Final answer
    x = 63,863.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.